Tools
Free WiFi and network tools
Eight tools for the things that come up when you're working on a network — identifying a device from its MAC address, sharing WiFi without reading a password out loud, sizing a subnet, checking DNS. No signup, no account, and the QR and password tools never send anything off your device.
MAC / OUI vendor lookupIdentify the manufacturer behind a MAC address, and spot randomized phone addresses instead of getting a blank result.WiFi QR code generatorTurn a network name and password into a scannable QR code that joins the WiFi. Generated in your browser.WiFi password strengthCheck how long a WiFi password would hold up, and what actually makes it stronger.Subnet / CIDR calculatorNetwork address, broadcast, usable host range and netmask for any IPv4 CIDR block.What's my IPYour public IP address as the internet sees it, with the network it belongs to.DNS lookupResolve A, AAAA, MX, TXT, NS and CNAME records for any domain.MAC address generatorGenerate valid random MAC addresses, universally or locally administered, for testing.Password generatorGenerate strong random passwords and passphrases. Nothing is sent anywhere.